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Select the correct Statement from the fo...

Select the correct Statement from the following.

A

Endocrine system of invertebrates is very complex

B

`T_4` is secreted from follicular cells of parathyroid glands .

C

Adrenal cortex secretes DHEA and cortisol

D

Vasopressin is synthesized and released by posterior pituitary .

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to evaluate each of the provided statements regarding the endocrine system and hormones to identify the correct one. ### Step-by-Step Solution: 1. **Evaluate Statement 1**: - The statement claims that the endocrine system of invertebrates is very complex. - **Analysis**: The endocrine system of vertebrates is indeed complex, while invertebrates generally have a simpler endocrine system. - **Conclusion**: This statement is **incorrect**. 2. **Evaluate Statement 2**: - The statement claims that T4 (thyroxine) is secreted from the follicular cells of the parathyroid. - **Analysis**: T4 is actually secreted by the thyroid gland, not the parathyroid. The parathyroid glands are responsible for secreting parathormone, which regulates calcium levels. - **Conclusion**: This statement is **incorrect**. 3. **Evaluate Statement 3**: - The statement claims that the adrenal cortex secretes DHEA (Dehydroepiandrosterone) and cortisol. - **Analysis**: The adrenal cortex does indeed secrete both DHEA and cortisol. Cortisol is a glucocorticoid, and DHEA is a sex steroid hormone. - **Conclusion**: This statement is **correct**. 4. **Evaluate Statement 4**: - The statement claims that vasopressin (ADH) is synthesized and released by the posterior pituitary. - **Analysis**: Vasopressin is synthesized in the hypothalamus and then transported to and released from the posterior pituitary. - **Conclusion**: This statement is **incorrect**. ### Final Answer: The only correct statement is **Statement 3**: "The adrenal cortex secretes DHEA and Cortisol." ---
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